Chapter 1 Historical background

Hevesy, 1962 Hevesy, 1913, Z. anorg. Chem., 82, 322, 10.1002/zaac.19130820125 Hevesy, 1914, Phys. Z., 15, 797 Hevesy, 1914, Z. phys. Chem., 89, 294, 10.1515/zpch-1914-0125 Hevesy, 1915, Phys. Z., 15, 797 Hevesy, 1920, Ber. dtsch. chem. Ges., 53, 410, 10.1002/cber.19200530304 Groh, 1921, An. Phys., 65, 216, 10.1002/andp.19213701103 Hevesy, 1925, Nature, 115, 674, 10.1038/115674a0 Christiansen, 1924, C. R. Acad. Sci., Paris, 178, 1324 Hevesy, 1951, Chem. Soc. J., 1618, 10.1039/jr9510001618